I will be your fractional cto and technical partner for your startup or business

M
marians302
M
marians302
Marian S

Vetted Pro

Level 2

be your fractional cto and technical partner for your startup or business
Full Screen
be your fractional cto and technical partner for your startup or business
Vetted by Fiverr Pro

Marian S was selected by the Fiverr Pro team for their expertise.

About this gig

You have a product.

What you don't have is someone senior enough to say whether the technology underneath it will hold.


Is the architecture right for where you're going?

Is it secure enough to take payments?

Is that developer quoting fairly?

Hire, outsource, or neither?


Those decisions get expensive quietly. I make them with you.


WHAT I DO

- Review your codebase and tell you what is actually in it

- Architecture, security and scaling decisions before they get expensive

- A technical roadmap tied to your business, with costs attached

- Code review on whoever is building for you

- Hiring and vendor decisions, so you stop overpaying


WHY ME

- Fractional CTO and lead software engineer for a private aviation company (2022-2026) and a US marketplace (since 2026)

- Technical partner to a Shopify Plus brand past $10M in sales

- I run my own AI SaaS, so I decide like an owner, not a contractor

- One of the most successful freelancers since 2014, trusted by US businesses


Plain language, costs attached. I build with AI agents every day and understand every line I ship.


Send me what you have and what worries you most. I'll tell you what I'd look at first.

  • Website type

    • Saas

  • Programming language

    • HTML & CSS
    • JavaScript
    • TypeScript
    • React
    • Angular

  • Website features

    • Marketing
    • Customer support
    • Inventory
    • Analytics
    • Membership
    • Booking
    • Calendar
    • Dashboard
    • User Authentication
    • Admin Panel
Respect third-party rights

Please be aware that it is against Fiverr's policies for sellers to include themes, templates, or any other elements that infringe third-party rights or applicable laws in the delivered work. Read more about in our Guide to Responsible Digital Creation.

Get to know Marian S

Marian S

Vetted Pro

AI Tools, Fractional CTO, Web Apps, Ecommerce, Senior Software Engineer

5.0(7)

Level 2

Marian S is part of the Fiverr Pro catalog and has been hand-picked by a dedicated Fiverr Pro team for their skills and expertise.

Vetted for

  • Website Development

  • Website Maintenance

  • FromRomania
  • Member sinceNov 2021
  • Avg. response time1 hour
  • Last delivery3 months

  • Languages

    English, Romanian, Croatian, German
Hi, I'm Marian. Senior software engineer and technical partner. I build AI tools, web apps, premium websites and Shopify stores that hold up. One of the most successful freelancers since 2014. 250+ clients, rated 4.93, trusted by US businesses. - Fractional CTO and lead software engineer for a private aviation company (2022-2026) and a US marketplace (since 2026) - Technical partner to a Shopify Plus brand past $10M in sales - Built SelfManager.ai, my own AI SaaS: 400k+ lines, 14 AI features, MCP server, API & Webhooks What are you building?

My Portfolio

Other Website Development Services I Offer

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